I don't mean the shinies in the catcher, because they are easy to spot. I mean the caught ones. They are really hard to spot sometimes, because you already own that Pokémon and the shiny is really hard to spot between those two or three or HUNDRED. The Phione egg is a good example. I can't spot any difference, the reason I know which one is the shiny is, because I caught the shiny later. So I would suggest to mark the shinies with a red star like in the games.